2 
top of Middle Valley and. a small colony high up in East Palm Valley. He 
recorded eggs, nestlings and immatures. Kramer and Beardsley (op. cit) found 
eggs, nestlings and immatures on June 10, I962. 
SoKV6Y?fi*TY 
The POBSP b&tg of March 6, 1964 estimated 6,000 nests divided into two 
colonies which were situated, in the same areas as those found by Vanderbilt 
and de Schauensee (op. cit) in 1940. One hundred one-week old nestlings were 
found, with the remaining nests containing eggs. The ~trip of March 24, 1965 
estimated. 50,000 nests of which 90 percent contained eggs and 10 percent 
nestlings. One colony was found on the plateau north of Miller f s Peak summit, 
an area not previously utilized by Sooty Terns. 
Using 12 nests which were counted in a 10 T xl0* plot selected as 
representative of the 300’x375 T breeding area, 13,500 nests were calculated 
for this colony. With eggs reported in March (3 records), June (2 records), 
and August (one record) the timing of the breeding cycle, on Bihoa, is not 
clearly indicated. Sooty Terns on other Pacific islands, however, are known 
to breed on a 6-mo nth, 9-Kionth, us well as an annual cycle (Ashmole?). 
Other Specimens : USEM 300548, cT, June 13, 1923; USEM 300549, 9, June 15, 1923; 
USEM 300550, cf, June 13* 1923j USEM 300551* 9 immature, June 12, 1923* Phila. 
Academy, 146154, 9* August 1940. 
